package com.codejiwei.flink.practice;

import org.apache.flink.api.common.typeinfo.Types;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.windowing.assigners.GlobalWindows;
import org.apache.flink.util.Collector;

import java.util.Arrays;

/**
 * @author jiwei
 * @description
 * @date 2023/5/23 10:51
 */
public class Flink_Windows_Global {
    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        env.setParallelism(10);

        env.socketTextStream("localhost", 8889)
                .flatMap((String line, Collector<Tuple2<String, Long>> out) ->
                        Arrays.stream(line.split("\\W+")).forEach(word -> out.collect(Tuple2.of(word, 1L))))
                .returns(Types.TUPLE(Types.STRING, Types.LONG))
                .keyBy(k -> k.f0)
                .window(GlobalWindows.create())
                .sum(1)
                .print();

        env.execute();

    }

}
